CN102355750A - System and method for wireless measuring illumination - Google Patents
System and method for wireless measuring illumination Download PDFInfo
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- CN102355750A CN102355750A CN2011102231859A CN201110223185A CN102355750A CN 102355750 A CN102355750 A CN 102355750A CN 2011102231859 A CN2011102231859 A CN 2011102231859A CN 201110223185 A CN201110223185 A CN 201110223185A CN 102355750 A CN102355750 A CN 102355750A
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Abstract
The invention discloses a system and a method for wireless measuring illumination. The wireless measurement system is characterized by comprising a plurality of Zigbee illumination measurement terminals, a Zigbee-general packet radio service (Zigbee-GPRS) gateway, a GPRS server and a plurality of clients. The Zigbee illumination measurement terminals acquire illumination by utilizing an illumination sensor and then wirelessly transmit illumination data to a remote Zigbee-GPRS gateway by utilizing a Zigbee technology; and the gateway remotely and wirelessly transmits the illumination data to the GPRS server by utilizing a GPRS technology, so that high performance remote transmission of the illumination data is realized. The plurality of clients can query the illumination data acquired by all Zigbee illumination measurement terminals through the Internet network.
Description
Technical field
The invention belongs to illumination photometry and wireless communication technique field, be specifically related to a kind of sensor technology, ZigBee and GPRS wireless communication technique of utilizing and illumination gathered and the system and the method thereof of wireless transmission.
Background technology
Traditional fieldbus also has application in road lighting control, but it is complicated to exist the communication interface agreement mostly, and needs to lay client cables, exists the cost height, safeguards problem such as inconvenience; The arrowband power line carrier directly utilizes power line to carry out data communication; Save the installation of private cable, made up flexibly, had characteristics such as cost performance height, upgrading is convenient, maintenance is simple; But have the shortcoming that power line interference is big, transmission rate is slow, the reliability of large-scale application is still waiting checking.Along with the communication and the development of automatic technology, wireless network makes things convenient for because of its networking, and layout is easy, safeguards simple advantage, begins progressively in the applicable industry production field.In road lighting was measured, ripe at present application was adopted conventional industrial frequency range mostly or is utilized public networks such as GSM short message or GPRS/CDMA.Adopt data radio station not only need apply for industrial frequency range, the antenna installation trouble, and also equipment price is higher; The GSM short message communication is realized simple, but real-time and amount of information can not get assurance, and GPRS/CDMA charges by flow, and more for a long time, system cost can sharply rise at the lighting number of nodes.
The ZigBee wireless communication technology has the key character and the advantage of low cost, low-power consumption, peer-to-peer communications.The straight-through ability of terminal room realizes that promptly peer-to-peer communications is the key character of short-distance wireless communication; Be different from long range wireless communication technologies; Peer-to-peer communications need not network infrastructure and carries out transfer; Interface design and upper-layer protocol are relatively simple, are more suitable for the scale node communication in the city illumination measuring system, and existing both at home and abroad many mechanisms and company begin to pay close attention to and study the networked road lighting measuring system based on wireless communication technology.
Summary of the invention
The object of the invention is to provide a kind of wireless illumination photometry system and method thereof, has solved in the prior art problems such as, data record complicacy low to road illumination photometry cost height, poor accuracy, efficient.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
A kind of wireless illumination photometry system is characterized in that the said wireless measuring system of said system comprises: several ZigBee illumination photometry terminals, ZigBee-GPRS gateway, GPRS server and several clients.Said ZigBee illumination photometry terminal utilizes illuminance transducer to gather illumination, utilizes the ZigBee technology illumination data to be wirelessly transmitted to the ZigBee-GPRS gateway of far-end then; Said gateway sends the illumination data remote-wireless to the GPRS server through the GPRS technology; Several clients can be checked the illumination data that all ZigBee illumination photometry terminals are gathered through the Internet network.
Preferably, ZigBee illumination photometry terminal comprises illuminance transducer, current-voltage conversion circuit, analog to digital converter and ZigBee wireless data transmission module.The light signal of illuminance transducer measuring illumination scope 0 to 200lx, the current signal of corresponding output 4 to 20mA; Through current-voltage conversion circuit, current signal is converted into the voltage signal of 0V to 5V; And then obtain the voltage signal of 0V to 3.3V through bleeder circuit; At last obtain corresponding digital signal, and send microprocessor to and carry out data processing by analog to digital converter.The ZigBee wireless data transmission module mainly is responsible for adding the ZigBee network, and the illumination data that wireless transmission collected.
Preferably, said ZigBee-GPRS gateway comprises ZigBee wireless data transmission module and GPRS wireless data transmission module.This ZigBee wireless data transmission module mainly is responsible for setting up the ZigBee network, and receives the illumination data that each measuring terminals is uploaded; Main and the GPRS network of this GPRS wireless data transmission module connects, and the information of all illumination data and corresponding measuring terminals is handled, and finally is uploaded to the GPRS server.
Preferably, said ZigBee wireless data transmission module comprises microprocessor, RF impedance match circuit and 2.4GHz antenna.Microprocessor is used to move ZigBee wireless transmission protocol stack program, and the transceive data bag is analyzed, handled.The RF impedance match circuit is responsible for connecting the radio-frequency head and the antenna of microprocessor, and reaches the effect of 50 ohms impedance match.2.4GHz antenna can adopt plastic rod antenna, ceramic antenna or PCB antenna.
Preferably, the ZigBee wireless data transmission module is to be connected through serial ports with the GPRS wireless data transmission module in the said ZigBee-GPRS gateway.The ZigBee wireless data transmission module sends AT commands for controlling GPRS wireless data transmission module through serial ports; The GPRS wireless data transmission module feeds back to the ZigBee wireless data transmission module through serial ports.
Preferably, said GPRS wireless data transmission module comprises SIM, startup and reset key, network indicator light, 900MHz antenna.The ZigBee-GPRS gateway is built after the ZigBee network, and through manually booting the GPRS wireless data transmission module, foundation is connected with GPRS network, and the network indicator light shows current network state.
Preferably, said ZigBee wireless data transmission module can comprise power amplifier according to the requirement of institute's transmission range, and peak power output can reach 17dBm.
As preferably, described GPRS server has public network IP address, and the GPRS server software of ICP/IP protocol is followed in operation.Server must have public network IP address, just can connect with GPRS network.The illumination data that server stores collected, record gateway information and all ZigBee illumination photometry end messages, and these information are classified and handle.
Preferably, the wireless illumination photometry client software of ICP/IP protocol is followed in said client operation, and the user can check the illumination data that all ZigBee illumination photometry terminals are gathered through access client.
Another object of the present invention is to provide a kind of wireless illumination photometry method, it is characterized in that said method comprising the steps of:
(1) carries out the software and hardware initialization after the ZigBee-GPRS gateway powers on, and then set up the ZigBee network, wait for that ZigBee illumination photometry terminal adds;
(2) manually boot the GPRS wireless data transmission module of ZigBee-GPRS gateway, connect, light GPRS network and connect indicator light with GPRS network;
(3) carry out the software and hardware initialization after ZigBee illumination photometry terminal powers on, and then add the ZigBee network automatically;
(4) ZigBee illumination photometry terminal periodic property measuring illumination, and illumination data is wirelessly transmitted to the ZigBee-GPRS gateway;
(5) the ZigBee-GPRS gateway is handled the illumination data and the corresponding Z igBee illumination photometry end message that receive, uploads onto the server through GPRS network then;
(6) illumination data that collected of GPRS server stores, record gateway information and all ZigBee illumination photometry end messages, and these information are classified and handle.
(7) client is moved wireless illumination photometry client software, and the user can check the illumination data that all ZigBee illumination photometry terminals are gathered through access client.
Preferably, said wireless illumination photometry method can be carried out according to following steps:
At first, ZigBee-GPRS gateway electrifying startup, its power supply indicator is opened simultaneously, and then sets up the ZigBee network, waits for that ZigBee illumination photometry terminal adds.Then, manually boot the GPRS wireless data transmission module of ZigBee-GPRS gateway, connect, light GPRS network and connect indicator light, and on the server display interface, show current ZigBee-GPRS gateway status with GPRS network.
Then, several ZigBee illumination photometry terminals of electrifying startup, after successfully adding the ZigBee network, periodic measurement illumination, and illumination data is wirelessly transmitted to the ZigBee-GPRS gateway.Because each terminal all is to adopt powered battery, therefore in non-measuring period,, take dormancy to handle for reaching the power saving purpose.
At last, the ZigBee-GPRS gateway is handled the illumination data and the corresponding Z igBee illumination photometry end message that receive, uploads onto the server through GPRS network then; The illumination data that the GPRS server stores is collected, record gateway information and all ZigBee illumination photometry end messages, and these information are classified and handle.
In addition, client is moved wireless illumination photometry client software, and the user can check the illumination data that all ZigBee illumination photometry terminals are gathered through access client.
With respect to scheme of the prior art, advantage of the present invention is: low cost, low-power consumption, peer-to-peer communications, Interface design and upper-layer protocol are relatively simple, are more suitable in the scale of city illumination measuring system.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is a wireless illumination photometry system schematic in the embodiments of the invention;
Fig. 2 is a ZigBee-GPRS gateway structural representation in the embodiments of the invention;
Fig. 3 is a ZigBee illumination photometry terminal structure sketch map in the embodiments of the invention;
Fig. 4 is current-voltage conversion circuit and a bleeder circuit structural representation in the embodiments of the invention;
Fig. 5 is the workflow diagram of ZigBee-GPRS gateway in the embodiments of the invention;
Fig. 6 is the workflow diagram at ZigBee illumination photometry terminal in the embodiments of the invention;
Fig. 7 is the workflow diagram of GPRS server software in the embodiments of the invention;
Fig. 8 is the workflow diagram of client software in the embodiments of the invention;
Fig. 9 is a client software flow chart of the present invention.
Embodiment
Below in conjunction with specific embodiment such scheme is further specified.Should be understood that these embodiment are used to the present invention is described and are not limited to limit scope of the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Illumination photometry system that the embodiment somewhere is wireless
Like Fig. 1, wireless illumination photometry system's employing network communicating system structure as shown in Figure 1 of present embodiment wherein comprises: several ZigBee illumination photometry terminals, ZigBee-GPRS gateway, GPRS server and several clients.Said ZigBee illumination photometry terminal utilizes illuminance transducer to gather road illumination, utilizes the ZigBee technology illumination data to be wirelessly transmitted to the ZigBee-GPRS gateway of far-end then; Said gateway sends the illumination data remote-wireless to the GPRS server again through the GPRS technology; Several clients can be checked the illumination data that all ZigBee illumination photometry terminals are gathered through the Internet network.
The method of the wireless illumination photometry of road may further comprise the steps:
At first, ZigBee-GPRS gateway electrifying startup, its power supply indicator is opened simultaneously, and then sets up the ZigBee network, waits for that ZigBee illumination photometry terminal adds.Then, manually boot the GPRS wireless data transmission module of ZigBee-GPRS gateway, connect, light GPRS network and connect indicator light, and on the server display interface, show current ZigBee-GPRS gateway status with GPRS network.
Then, several ZigBee illumination photometry terminals of electrifying startup, after successfully adding the ZigBee network, periodic measurement illumination, and illumination data is wirelessly transmitted to the ZigBee-GPRS gateway.Because each terminal all is to adopt powered battery, therefore in non-measuring period,, take dormancy to handle for reaching the power saving purpose.
At last, the ZigBee-GPRS gateway is handled the illumination data and the corresponding Z igBee illumination photometry end message that receive, uploads onto the server through GPRS network then; The illumination data that the GPRS server stores is collected, record gateway information and all ZigBee illumination photometry end messages, and these information are classified and handle.
In addition, client is moved wireless illumination photometry client software, and the user can check the illumination data that all ZigBee illumination photometry terminals are gathered through access client.
Below wireless illumination photometry system various piece is described in detail:
The ZigBee-GPRS gateway that present embodiment adopts comprises ZigBee wireless data transmission module and GPRS wireless data transmission module.This ZigBee wireless data transmission module mainly is responsible for setting up the ZigBee network, and receives the illumination data that each measuring terminals is uploaded; Main and the GPRS network of this GPRS wireless data transmission module connects, and the information of all illumination data and corresponding measuring terminals is handled, and finally is uploaded to the GPRS server.Its physical circuit connected mode is as shown in Figure 2.
The ZigBee wireless data transmission module is to be connected through serial ports with the GPRS wireless data transmission module in the said ZigBee-GPRS gateway.
Said ZigBee wireless data transmission module comprises microprocessor, RF impedance match circuit and 2.4GHz antenna.Microprocessor is used to move ZigBee wireless transmission protocol stack program, and the transceive data bag is analyzed, handled.The RF impedance match circuit is responsible for connecting the radio-frequency head and the antenna of microprocessor, and reaches the effect of 50 ohms impedance match.2.4GHz antenna can adopt plastic rod antenna, ceramic antenna or PCB antenna.
Said GPRS wireless data transmission module comprises SIM, startup and reset key, network indicator light, 900MHz antenna.The ZigBee-GPRS gateway is set up after the ZigBee network, and through manually booting the GPRS wireless data transmission module, foundation is connected with GPRS network, and the network indicator light shows current network state.
The SIM900A that the GPRS module of being selected for use in the present embodiment is produced for SIMCOM company.SIM900A is the wireless module of compact, high reliability, adopts the double frequency GSM/GPRS module solution of SMT encapsulation, adopts powerful processor A RM9216EJ-S kernel, can satisfy development requires low-cost, compact size.SIM900GSM/GPRS uses the industrial standard interface, makes the SIM900A that possesses GSM/GPRS 900/1800MHz function realize the high-speed transfer of voice, SMS, data and facsimile message with small size and low-power consumption.SIM900A can satisfy the nearly all application requirements of M2M, the design of especially small and exquisite, compact.Its physical size is: 24mm x 24mm x 3mm.Based on the technology platform of mature and reliable, and provide from Product Definition to design and the service support of producing.
The SIM900A operating voltage is 3.1V to 4.8V, and power module provides 4.2V supply voltage in the present embodiment.SIM900A and SIM adopt the SIM interface circuit of standard: " VSM " is the 1.8V SIM operating voltage of SIM900A output; " SIM_Data ", " SIM_CLK " and " SIM_RST " are respectively " SIM data ", " SIM clock " and " SIM resets ".
The SIM900A outside also is connected to " startup button " and " reset key ", and these 2 buttons all are that low level is effective; When starting SIM900A, need normal by starting button 1S more than the time; " network indicator light " can be represented current network state, equally also is that low level is effective.
The ZigBee SOC of a new generation chip CC2530 is real SOC(system on a chip) solution, supports the application of the IEEE 802.15.4 standard/ZigBee/ZigBee RF4CE and the energy.Have nearly 256 bytes of huge fast flash memory bank, CC2530 is desirable ZigBee professional application.CC2530 combined one fully-integrated, high performance RF transceiver and one 8051 microprocessor, the RAM of 8kB, 32/64/128/256KB flash memory, and other powerful support function and peripheral hardwares, CC2530F256 represent that its internal flash is 256KB.CC2530 has powerful wireless front end, its inner integrated 2.4GHzIEEE 802.15.4 standard radio frequency transceiver.Power output able to programme is+4.5dBm overall wireless connections 102dBm.
SIM900A is connected with the microprocessor CC2530 of ZigBee wireless data transmission module through serial ports, and " TXD " and " RXD " is respectively the data of serial interface and sends and the Data Receiving pin, and " GND " is the common ground end.CC2530 passes through some row AT instructions of transmission, control SIM900A, and for example: set up TCP with far-end server and be connected, transmission packet etc. all instructs through transmission AT to be accomplished.
Use the Server Transport data of TCP, at first will set up a TCP and connect to far-end.SIM900A initiates a TCP as CLIENT to long-range SERVER and connects; The IP address that successfully connect needs SERVER to hold is that the IP address of public network (can use the mode of dialing to obtain; As then connecting) in PC local area network (LAN) inside; At this moment our SERVER software of this server operation then just can be connected (AT+CIPSTART=" TCP ", " the IP address of SERVER " setting up TCP with AT commands for controlling SIM900A with SERVER; " port numbers of SERVER "), can return CONNECT OK after the successful connection.Just can send data to SERVER with AT+CIPSEND then, if SERVER has data, module receives through serial ports automatically.Close TCP and connect available AT+CIPCLOSE order.
CC2530 starts the transmission data command with the AT+CIPSEND order, returns the data that the input of "＞" back is sent, and ctrl+z (0x1a) starts transmission.Send to accomplish and return SEND OK afterwards.Be in command mode this moment, if there have the data transmission to repeat above step again to be just passable.Each data length that sends should be less than 1024bytes.The reception data are automatic reception, if then automatic reception of remote data is arranged.Can add sign automatically in the data front that receives with AT+CIPHEAD=1.
The ZigBee illumination photometry terminal that present embodiment adopts comprises: illuminance transducer, current-voltage conversion circuit, bleeder circuit, analog to digital converter and ZigBee wireless data transmission module.Its physical circuit connected mode is as shown in Figure 3.
Fig. 4 is the illuminance transducer schematic diagram, and wherein C is the cosine adjuster, and F is V (λ) filter, and D is an optical detector.When D accepts to pass through the light radiation of C and F, the photosignal that is produced, after operational amplification circuit A amplification and conversion, output 4-20mA normalized current signal, wherein 4mA representes that illumination is 0, the full scale of 20mA expression signal, corresponding illumination is 200lx.(unit: lx), wherein I is the output current value (4～20mA) of transducer to calculate brightness value E=(I-4) * 12.5 by the output current of illuminance transducer.
For accurate measuring illumination, matching error≤5.5% of V (λ), cosine characteristic error≤4%, nonlinearity erron ± 1.0%, the transducer error of indication is ± 4.0%.
Because therefore the voltage-type analog to digital converter that ZigBee illumination photometry terminal inner microprocessor CC2530 has 8 to 14 precision can not need external analog to digital converter.But because the supply power voltage of CC2530 is 3.3V, and the internal mode number converter is voltage-type, therefore need convert 4 to 20mA current signals into 0 to 3.3V voltage signal.Present embodiment realizes that through current-voltage conversion circuit and bleeder circuit its physical circuit connected mode is as shown in Figure 5.
Get R1=25 Ω, during 4mA, its pressure drop=0.1V, the 0.1V that the in-phase end input voltage of OP07 is configured to bear, like this, the negative 0.1V of the 0.1V of input signal and this I/V configuration cancels each other just, and OP07 output will be no-voltage.Along with the increase of input current, if input current is 5mA, be 20mA if the I/V changing voltage will be the 0.125V...... input current, the I/V sampling voltage is exactly 500mV.Like this, we can obtain the output of 5V full scale to 10 times of this voltage amplifications.We can obtain 0 to 5V output voltage V out5 through this translation circuit, pass through bleeder circuit again, just obtain final 0 to 3.3V voltage signal Vout3.3.
The execution flow process of ZigBee-GPRS gateway is as shown in Figure 6 in the present embodiment.After powering on, the ZigBee-GPRS gateway at first hardware circuit and ZigBee protocol stack are carried out initialization.Set up network then, and wait for that ZigBee illumination photometry terminal adds the ZigBee network.Manually boot SIM900A then, connect with GPRS network, its network indicator light is opened, and expression connects successfully.The ZigBee-GPRS gateway is constantly monitored the ZigBee illumination photometry terminal quantity of adding, and judges whether to reach the maximum of network capacity.When ZigBee illumination photometry terminal to apply added the ZigBee network, the ZigBee-GPRS gateway was the initiate terminal distribution ZigBee network address.
Set up the ZigBee network with the ZigBee illumination photometry terminal that adds network then and be connected, poll is intercepted the illumination data bag that send at the terminal that connected in the air.If illumination data inclusion lattice, then CC2530 will be sent to SIM900A with data through serial interface.SIM900A judges the packet that receives, feedback information is sent to CC2530 through serial interface.
For improving the quality of wireless transmission, native system can also increase frequency hopping function, when the signal link quality is low, through changing wireless transmission channel, reaches higher anti-jamming capacity.If channel quality meets the demands, then need not to change channel, continue to intercept airborne packet.
The execution flow process at ZigBee illumination photometry terminal is as shown in Figure 7 in the present embodiment.Initialization is at first carried out to hardware circuit, analog to digital converter and ZigBee protocol stack in ZigBee illumination photometry terminal, sends to the ZigBee-GPRS gateway then to add network requests message, and waits for ZigBee-GPRS gateway distribution network address.After adding the ZigBee network, the network indicator light is opened, and shows successfully to add, and connects with the ZigBee-GPRS gateway.
And then, each ZigBee illumination photometry terminal sends to the ZigBee-GPRS gateway with essential information, by the ZigBee-GPRS gateway these essential informations is uploaded to the GPRS server again.Wherein, these essential informations comprise: device id number, version number, 64 IEEE addresses, 16 ZigBee network addresss, individual territories net ID number, current state.
Just can periodically from analog to digital converter, read the current illumination that collects then.If system has adopted frequency hopping function, then need inquire about current channel, then the illumination data bag is wirelessly transmitted to the ZigBee-GPRS gateway of far-end.During non-collection period, ZigBee illumination photometry terminal is in resting state.The illumination data bag not only comprises the current brightness value that collects, and also comprises: device id number, frame identification, application end period, current electric quantity, link-quality, signal strength signal intensity, number of frames, timestamp.
GPRS server software and GPRS server software all use the Labview software of NI company to write in the present embodiment.
The api function that the GPRS server software mainly uses has " TCP intercepts ", " writing tcp data ", " reading tcp data " and " closing TCP is connected ", and GPRS server software flow chart is as shown in Figure 8.Wait for when server begins that the ZigBee-GPRS gateway carries out GPRS network and connects,, then continue to wait for if do not receive connection request.If receive connection request, then set up TCP and connect.If server is received the inquiry message that other clients are sent, can respond to inquiry message.During under normal circumstances not unusual the generation, server directly reads the data that the ZigBee-GPRS gateway is uploaded, and packet is stored, analyzed and handles.If unusual generation is arranged, or do not receive packet for a long time, will inquire the response of ZigBee-GPRS gateway, and wait-for-response; Upload data as if receiving that response is then then read,, then continue inquiry ZigBee-GPRS gateway responsive state if do not receive response yet.
The api function that client software mainly uses has " opening TCP connects ", " writing tcp data ", " reading tcp data " and " closing TCP is connected ", and the client software flow chart is as shown in Figure 9.Open when client begins with the TCP of server and be connected,, then read information in the server if in the stand-by period, connect; Otherwise, overtime withdrawing from.Client can be carried out analyzing and processing to the information that reads, and is depicted as curve chart.If unusual generation is arranged, or do not receive packet for a long time, will inquire the server response, and wait-for-response; Then follow reading of data if receive response,, then continue inquiry server responsive state if do not receive response yet.
Above-mentioned instance only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (10)
1. a wireless illumination photometry system is characterized in that said wireless measuring system comprises: several ZigBee illumination photometry terminals, ZigBee-GPRS gateway, GPRS server and several clients.Said ZigBee illumination photometry terminal utilizes illuminance transducer to gather illumination, utilizes the ZigBee technology illumination data to be wirelessly transmitted to the ZigBee-GPRS gateway of far-end then; Said gateway sends the illumination data remote-wireless to the GPRS server again through the GPRS technology; Several clients can be checked the illumination data that all ZigBee illumination photometry terminals are gathered through the Internet network.
2. wireless illumination photometry according to claim 1 system is characterized in that ZigBee illumination photometry terminal comprises illuminance transducer, current-voltage conversion circuit, bleeder circuit, analog to digital converter and ZigBee wireless data transmission module.
3. ZigBee illumination photometry according to claim 2 terminal is characterized in that illuminance transducer output 4 to 20mA current signals are corresponding to 0 to 200lx illumination.
4. wireless illumination photometry according to claim 1 system is characterized in that said ZigBee-GPRS gateway comprises ZigBee wireless data transmission module and GPRS wireless data transmission module.
5. according to claim 2 and 4 described ZigBee illumination photometry terminal and ZigBee-GPRS gateways, it is characterized in that the ZigBee wireless data transmission module comprises microprocessor, RF impedance match circuit and 2.4GHz antenna.
6. ZigBee-GPRS gateway according to claim 4 is characterized in that the GPRS wireless data transmission module comprises SIM, startup and reset key, network indicator light, 900MHz antenna.
7. ZigBee-GPRS gateway according to claim 4 is characterized in that the ZigBee wireless data transmission module is connected through serial interface with the GPRS wireless data transmission module.
8. wireless illumination photometry according to claim 1 system it is characterized in that said GPRS server has public network IP address, and the GPRS server software of ICP/IP protocol is followed in operation.
9. wireless illumination photometry according to claim 1 system is characterized in that said client operation follows the wireless illumination photometry client software of ICP/IP protocol.
10. method of utilizing the described system of claim 1 to carry out wireless illumination photometry is characterized in that said method comprising the steps of:
(1) carries out the software and hardware initialization after the ZigBee-GPRS gateway powers on, and then set up the ZigBee network, wait for that ZigBee illumination photometry terminal adds;
(2) manually boot the GPRS wireless data transmission module of ZigBee-GPRS gateway, connect, light GPRS network and connect indicator light with GPRS network;
(3) carry out the software and hardware initialization after ZigBee illumination photometry terminal powers on, and then add the ZigBee network automatically;
(4) ZigBee illumination photometry terminal periodic property measuring illumination, and illumination data is wirelessly transmitted to the ZigBee-GPRS gateway;
(5) the ZigBee-GPRS gateway is handled the illumination data and the corresponding Z igBee illumination photometry end message that receive, uploads onto the server through GPRS network then;
(6) illumination data that collected of GPRS server stores, record gateway information and all ZigBee illumination photometry end messages, and these information are classified and handle.
(7) client is moved wireless illumination photometry client software, and the user can check the illumination data that all ZigBee illumination photometry terminals are gathered through access client.
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| CN104574912A (en) * | 2015-02-08 | 2015-04-29 | 张朝利 | Viaduct bridge deformation quantitative monitoring system and prediction method thereof |
| CN104713639A (en) * | 2015-04-01 | 2015-06-17 | 苏州大学 | Illumination tester based on aeroplane positioning and illumination testing group |
| CN105510397A (en) * | 2015-11-27 | 2016-04-20 | 中国地质大学（武汉） | Remote automatic water quality monitoring system |
| CN105651382A (en) * | 2014-10-21 | 2016-06-08 | 财团法人工业技术研究院 | Illuminance measuring system |
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